ULTIMAXX Replacement battery for Nikon ENEL20 - 1500 mah (x2) Short Description This Replacement EN-EL20 Lithium-Ion Battery Pack works with the same cameras as the Nikon EN-EL20. Small and lightweight, lithium-ion batteries can be charged or discharged at any time without developing memory effect. Compatible Cameras Nikon COOLPIX: A Nikon 1: J1 J2 J3 S1 Blackmagic Design: Pocket Cinema Camera